Casemaker



Oct. 27, 1953 P. BUNCH ET AL CASEMAKER 5 Sheets-Sheet 1 Original Filed Oct. 10, 1946 Oct. 27, 1953 P. BUNCH ETAL CASEMAKER 5 Sheets-Sheet 2 Original Filed Oct. 10; 1946 Oct. 27, 1953 P. BUNCH ET AL CASEMAKER 5 Sheets-Sheet 3 Original Filed Oct. 10, 1946 0 w a 77Zdt07mnq J M 672/121] Oct. 27, 1953 P; BUNCH ETAL 2,656,551

CASEMAKER Original Filed Oct. 10, 1946 5 Sheets-Sheet 4 \N #1 Q i g I I 03 I E I v '3 J Q i A I I \w 21927210721; 15 cm filmed; $5'a WZz/Zt0772/nw Oct. 27, 1953 P. BUNCH ET AL 2,656,551

CASEMAKER Original Filed Oct. 10, 1946 5 Sheets-Sheet 5 j aia 77 .o 127177'2/5/ mately one half a Patented Oct. 27, 1953 CASEMAKER Peter Bunch, Chicago, and Russell Jenning Peter Mittomme, Cicero,

5, Chicago, 111., assignors to Wilson-Jones Company, Chicago, 111., a corporation of Massachusetts Original application October 10, 1946, Serial No.

now Patent No. 2,596,068, dated May 6, 1952. Divided and this application October 10, 1951, Serial No. 250,678

6 Claims.

This application is 'a division of our prior application, Serial No. 702,390, filed" October 10, 1946, which issued as Patent No. 2,596,068 on May 6, 1952.

This invention relates to a casemaker for applying binding material to a back and a, pair of cover boards to form a case or cover for loose leaf binders.

Casemakers have been used in the manufacture of cases for loose leaf binders for many years and have reduced the expense of manufacturing certain types of loose leaf binders considerably because of their tremendous operating speed. However, the efficient use of casemakers was limited to binders having a fiat back-because no casemaker could bind a'case with a rounded binding back in place. Attempts had, been made at running a casemaker without'a binding back and then inserting a rounded binding back after the case was completed except for the back. These attempts were unsuccessful because the edges of the binding material that cover opposite surfaces of the ends of the binding back in the completed binder were glued together in the casemaker, and the time requiredto separate these glued edges in order to' insert the rounded binding back was so great that the total manufacturing cost for this type of operation was greater than when the cases were made entirely on conventional gluing tables. Attempts have also been made to modify the glue applying mechanism in acasemaker so thatarea of the edges that must be glued to theedges of 'the rounded binding back do not receive any glue in the casemaker, but these attempts have also'been unsuccessful. Z

It is one object of our invention to provide a 'casemaker capable of binding a rounded binding back into a case for loose leaf binders. 7 It is 'a further object of our invention to provide simple means that maybe readily applied toa conventional casemaker to adapt it to the manufacture "of cases'for loose leaf binders having arounded binding back. Other objects of our invention'will become apparentupon readingthe followingidescription, taken in conjunction with the acconripanyingdrawings, in which: v

V Figure 1 isa diagrammatic viewbf approxicasemakerl embodying}; our

invention;

Figure 1A is a view,,si mil ar to Figure ing the rest of the casemaker;

,show- Figure 2 isa side elevational view showing-the ndrq e 's t one tage -ther ema inscp ra- Figure 3 is a view, similar to Figure 2, showing the end rollers at a different stage of the casemaking operation;

Figure 4 is a side elevational View showing the portion of thecasemaker adapted to press the rounded binding back into position in the case;

Figure 5 is a front elevational view of the structure shown in Figure 4;

Figure 6 is a top plan View of the apparatus for positioning the rounded binding backs in position to be fed tothe case, taken along the line VI-VI of Figure 7 so as to show the relative position of the suction holdingdevice; Figure 7 is a cross sectional View, taken substantially along the line VII-VII of Figure 6, but showing a portion of the structure for feeding the rounded binding back to the case;

Figure 8 is a fragmentary cross sectional view 'showing the suction holding device and the rollers from which the rounded binding back is fed;-

Figure 9 is a longitudinal sectional view taken substantially along the line IX-IX of Figure 6,

but'showing a portion of the structure for feeding the rounded binding back to the case;

Figure 10 is a cross sectional view taken along the line X-X of Figure 6; r

Figure 11 is a cross sectional view taken along the line'XI-XI of Figure 9;. 3O

rounded binding back;

Figure 12 is a detail perspective view of the Figure 13 is a fragmentary perspective view showing a plurality of cases as they appear in the 'casemaker, just before and after the rounded binding back is positioned thereon; I

Figure 14 is a detail perspective view of a'case {before the rounded binding'back is bound in; and

Figure 15';i"s.a detail'perspective View of a completed case, ready for having a ring metal secured thereto.

- Much of the apparatus shown diagrammatically in the'drawings is conventional and will not be described in detailas it does not constitute any part of the invention. Such structure ha to 'be 'eral understanding of the entire device so that "the specificimprovements which are thesubject shown, however, to make it possible to get ya genof the present invention may be clearly under.-

stood.

Briefly described the casemaker comprises a spindle 2=from which a roll of fabric orlother binding-material 3 is fed into contact withia glue roller 4 .to, apply a tacky coating on one surface ofthe binding ma irial. The binding material,

with its tacky surface uppermost, is fed past-- a to receive a ring metal.

cover boards firmly to the binding material. A

shuttle mechanism ii positioned just beyondthe pressure rolls 9 and i is moved intermittently by a power driven main shaft l2. The shuttle:

binding material. and. Figure I.

clamps each board and the moves them to the right, asseen. in

When the shuttle reaches the end of its stroke it releases its grip on the board and binding material and moves back to the left to grip the next board. This movement constitutes the feeding movement of the binding material off the spindle 2. Adjacent the shuttle II is acorner cutting mechanism :2 th knives of which are synchronized with the shuttle movement so that corners f3 and is are cut at opposite sides of the binding material at regular spaced intervals.

After the corners is are cut, the fabric and covers are moved to a mechanism for positioning the round binding back l5 on the binding material between the cover boards. The next mechanism rolls the sides of the binding material against the covers. These mechanisms constitute an essential part of our invention and will be hereinafter described in detail.

After the sides of the binding material are rolled down against the cover boards the binding material continues on its movement until it reaches a knife l6, which is also synchronized with the feeding movement of the shuttle l I, and descends at regular intervals to separate the binding material transversely along a line extending from the notch or corner 13 to the opposite notch or corner M. The ends of'the binding material are rolled down against the cover boards by sets of rollers H and 18; The rollers are moved vertically and springs Hi and 20, shown better in Figures 2 and 3, pull the rollers against the ends of the binding material. Since the knife it has severedthe binding material the feeding move ment of the shuttle no longer controls the movement of the case. positively driven from the main shaft'lZ', feeds the cases from the knife Hi to a chain conveyor 23 which is also driven from the main shaft and is provided with upstanding lugs 24 to push the case along as the chain moves. The knife Hi, and rollers If, it, feeding rollers 2t, 22 and the chain conveyor 23 are all conventional and do not con-.

stitute part of the present invention.

The chain conveyor 23 moves the case into contact with a round cornering machine 25. The round cornering machine includes four arms'26, 21, 28 and 29, each adapted to hold down one corner of the case, and four presser arms 33, 3|, 32 and 33 which slide towards each corner and fold the binding material around each corner of the" case and are then retracted when the unit carrying the arms 2%, 2?, 28 and 29 is lifted. This portion of the round cornering machine is old, but we have added thereto a transverse pressure bar 34, shown also in Figures 4 and 5, for securing the sides of the binding material 3 over the ends of the rounded binding back l5. When the case is carried from the round cornering machine 25 by the chain conveyor 23 it is finished and is ready The attachment of the A series of rollers 21 and 22, r

ring metal is a separate, subsequent operation, not connected with the casemaker.

Referring specifically to Figures 6 to 11, inelusive; the means for positioning the rounded binding back on the case includes a chute 35 which is grooved, as indicated at 35 in Figure 11, to conform to the curvature of the rounded binding back. The rounded binding backs are inserted in the chute and are then slid along the chute under flanges 31 and 38. The chute 35 is adjacent to a pair of rollers 39 and 45 provided with longitudinal grooves 4| and 42 in registration with v the space between the top edges of the grooves. 35 and the underside of the flanges 3?, 38' so that the binding backs may be pushed through the chute 35 and the edges of each will engage the grooves 4|, 42 in succession The grooves are provided with overhanging flanges 43, M at the entering end to prevent the binding backs from being pushed out of the chute 35 into engagement with the rollers 35 and 40 when the grooves 41-! and: 42 are not in proper registration with the chute. The grooves 4| and 32 are moved out of registration with the chute 35 only for a very short interval ofv time when rollers 39 and 43 are rotated downwardly by the downward movement of the binding back l5 towards the binding material 3. One of the rollers 39 has a collar 45 secured thereto to stop the sliding movement of each binding back in proper position. The succoed-ing binding back is not pushed into contact with the collar 45 until after the suction cup assembly, hereinafter described, moves up to clear the space between grooves 4-! and 42.

The rollers 39 and 4B- ar rotatably mounted in brackets 46 and 41- which are secured to the bed All of the casemaker, Each roller 39, d0 has a wheel 49, 50 mounted thereon, as shown in Figure 10'. A pin 51-, 52 projects laterally from each wheel and the ends of the pins rest on fixed supports 53,- 54 when the rollers are positioned with the grooves 41, 42 ready to receive the edges of a rounded. binding back. A tension spring 55, 55 is secured. at one end to the pin 5!, 52, and at its other end to the base plat 57 which is secured to the bed 48. As each binding back is moved downwardly from the rollers 39, 4! to the binding material, in a manner hereinafter more fully described, the rotation of the rollers to release the edges of the binding back from the grooves t I, 42' causes the pins 5!, 52 to move upwardly from the supports 53, 54' against the action of the springs 55, 56, as long as positive rotation of the rollers 39, 40 continues. Since. this positive rotation is caused by the engagement of the edges of the binding back with the grooves it will stop as soon as the edgesof the binding back are free of. the grooves. The springs 55, 53. will then bring the pins 5t, 52 back to their position of rest on the supports 53', .54 andthe rollers 38, 35 will have their grooves 4|, 42 positioned to receive the next binding back.

,The apparatus forlfeeding the binding back [3 from the rollers 39 includes a suction cup assembly 58 which comprises a plurality of suction cups 59, a housing 60, a stem 6| and a flexible suction hose 62. As may be seen in Figure 1, the flex- 1ble suction hose is connected to a valve housing "63. A .valve control 64 projecting from one wall of the housing engages a cam 65 mounted on the main drive shaft land is controlled thereby. This control is synchronized with the vertical movement of the suctioncup assembly so that as the assembly moves downwardly the suction is on and the binding back is held firmly against the suction cups. This prevents the binding back assets;

from falling after it is released from the grooves 4 l, 42, and insures proper positioning of the back on the binding material. When the binding back is initially secured to the binding material the suction is automatically turned off by the valve control M as influenced by the position of the cam 65 at that instant, and the suction cup assembly may be moved back to its uppermost position without displacing the binding back l5, from its proper position on the. binding material.

The vertical movement of the suction cup assembly is controlled by a cam 66 (Figure 1) also mounted on the main drive shaft l2. The cam governs the action of a rocker arm 61' by means of a pin 68 which projects laterally from one end of the rocker arm and rides over the cam. The other end of the rocker arm is pivotally secured to a link 69, as indicated at Ill. The upper end of the link 59 is pivotally secured to a cross arm H, as indicated at 12. The cross arm is pivoted at T3 (FigureQ) to an upright secured to the bed 48. A cross bar 15 extends laterally from the middle of the upright 14 and is rigidly secured thereto in any suitable manner. The free end of the cross bar i5 has a vertical guide 16 rigidly secured thereto.

A vertically depending arm 11 has a pin I8 projecting laterally to engage a slot 19 in the end of the cross arm H so that the depending'arm 11 will move vertically with the pivotal movement of the cross arm H. A tension spring 8|] has one end secured to the cross arm H and its other endto the cross bar 15, as indicated at 8| and 82, respectively, to pull the right hand portion (as viewed in Figure 9) of the cross arm H, and the depending arm ll, down immediately after the cam 65, acting through the rocker arm 61 and link 69, has pulled the arm 11 up. It will be seen from Figure 1 that as soon as the arm I1 is raised the high section of the cam moves out of contact with the pin 68 and there is nothing to interfere with the action of the spring 80. The depending arm ll fits within the channels 83, 84 on the verticalguide I6 and its vertical movement is guided thereby. A clamp 85 is rigidly secured to the arm I! and moves therewith. The clamp is secured also to the stem 6| of the suction cup assembly so the suction cups move up and down with the arm H. a

As the binding material 3 moves into position to receive the rounded binding back l5 guide members 86 turn the ends of the binding up so that they are substantially vertical when the binding material reaches the next station. The feeding movement of the binding material is intermittent, as governed by the reciprocating movement of the shuttle mechanism II, and, as

the binding material comes to rest, a pair of holding members 31 move down against the cover boards to hold them in position while side rollers 88 move inwardly over both edges of the binding back i5.

which the case rests.

and 5, the presser arm 9! comprises a cross piece 93 secured to the block 92 and having blocks 94 secured at its ends. This leaves the center portion clearso that the presser arm may be used with binding backs that have prongs projecting therefrom for the attachment, at a later operation, of a ring metal, The presser arm could be made of a solid block of wood, but we prefer the structure illustrated because it may be used with any type of binding back. The lower surfaces of the blocks Mare curved, as indicated at 95, to conform to the curvature of the binding back so that the binding material is pressed smoothly modified or changed without departing from the spirit or scope of our invention. Accordingly, we do not desire to be limited to the exact structure described, except as limited by the appended claims.

We claim;

1. In a casemaker, a flat bed for supporting a sheet of binding material, means for positioning a pair of cover members and a rounded binding back on a sheet of binding material, means for adhering the side edges of said binding material to said cover members, said last mentioned means being provided with a clearance space adjacent said rounded binding back to prevent said last mentioned means from contacting the portions of binding material adjacent said rounded binding back, and separate presser means for adhering the portions of said binding material adjacent said rounded binding back to said rounded binding back after said side edges of said binding material have been adhered to said cover members.

2. In a casemaker, a flat bed for supporting a sheet of binding material, means for positioning a pair of cover members and a rounded binding back on a sheet of binding material, laterally movable means for adhering the edges of said binding material adjacent said covers to said covers, and separate vertically movable presser a means for adhering the edges of said binding material adjacent the ends of said binding back to said back.

3. In a casemaker, aflat bed for supporting a sheet of binding material, means forpositioning' a pair of covers and a rounded binding back'on a sheet of binding material; means for adhering the corners of said binding material to the corners .adapted tofit in said'rounded'binding backto cut away, as indicated at 90, to provide clearance undersurface of the block 92 whichconstitutes part of the round cornering mechanism and'reciprocates vertically relative to the .bed 48 upon adhere portions of the edges of said binding material to the'ends of said rounded binding backs. 4.-In acasemaker, a fiat bed for supporting a sheet of binding material, means for positioning a pair of cover members on a sheet of binding material 'in spaced relationship to each other, a pair of rollers grooved longitudinally to hold the edges of a binding back, vertically movable means for moving said binding back from said grooved rollers and positioning it on said binding material between said cover members, means for adhering the edges of said binding material adja- As shown best in Figures 4 across 1 cent said e versto said vers. and separate mean or adhering t e edges of sa d binding material ad acen the ends o aid binding back to sa d back- 7 i In a cas makeri a lat. bed for supp t a she t of bindi material, means f r position n a pair of cover members on a sheet of binding m terial in spac d relati n hip, means for po itionins a unded b nding ba k on d d n mat rial b we n aid co er m r roll r means f fold n t dges of. said. ndin material over the edg of the co ers. a d the. adjacent en of sa d ind ng back, said ro le means hav i s pressur su fac s divided to nga the b nding material adjacent each cover to adhere it her to without ngagin the bind n material adjacent the end O the binding back interposed betwee said co s Dresser bar, a ck secured to the underside of said Presser bar, v aid block being rounded on its lower suriace to conform to the contour of the rounded binding back, and means t mor s id presser bar ve ti y t orc Sa d bl ck a a nst t e indin material f lded ov the ends of th bindin ack o dhe e it th reto.

. .6 In a casemaker. a flat for pp n a sheet of binding mat r a means r positionin a pair of cover members on a sheet of binding material in Spaced relationship to each other, a pair of rollers grooved longitudinally to hold the edges of a binding back, suction means engageable with the top surface of a binding back and movable downwardly between said rollers for moving said binding back from said grooved rollers and positioning it on said binding material between said cover members, means for adhering the edges or said binding material adjacent said covers to said covers, and separate means for adhering the edges of said binding material adjacent the ends of said binding back to said back.

PETER BUNCH. PE'I'ER MITTOMME. RUSSELL JENNINGS.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 391,266 Ogden Oct. 16, 1888 490,895 Bredenberg Jan. 31, 1893 

